1 /* Target-dependent code for GNU/Linux, architecture independent.
3 Copyright (C) 2009, 2010 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
22 #include "linux-tdep.h"
25 #include "elf/common.h"
28 /* This function is suitable for architectures that don't
29 extend/override the standard siginfo structure. */
32 linux_get_siginfo_type (struct gdbarch *gdbarch)
34 struct type *int_type, *uint_type, *long_type, *void_ptr_type;
35 struct type *uid_type, *pid_type;
36 struct type *sigval_type, *clock_type;
37 struct type *siginfo_type, *sifields_type;
40 int_type = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
42 uint_type = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
44 long_type = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch),
46 void_ptr_type = lookup_pointer_type (builtin_type (gdbarch)->builtin_void);
49 sigval_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION);
50 TYPE_NAME (sigval_type) = xstrdup ("sigval_t");
51 append_composite_type_field (sigval_type, "sival_int", int_type);
52 append_composite_type_field (sigval_type, "sival_ptr", void_ptr_type);
55 pid_type = arch_type (gdbarch, TYPE_CODE_TYPEDEF, TYPE_LENGTH (int_type),
57 TYPE_TARGET_TYPE (pid_type) = int_type;
58 TYPE_TARGET_STUB (pid_type) = 1;
61 uid_type = arch_type (gdbarch, TYPE_CODE_TYPEDEF, TYPE_LENGTH (uint_type),
63 TYPE_TARGET_TYPE (uid_type) = uint_type;
64 TYPE_TARGET_STUB (uid_type) = 1;
67 clock_type = arch_type (gdbarch, TYPE_CODE_TYPEDEF, TYPE_LENGTH (long_type),
68 xstrdup ("__clock_t"));
69 TYPE_TARGET_TYPE (clock_type) = long_type;
70 TYPE_TARGET_STUB (clock_type) = 1;
73 sifields_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION);
76 const int si_max_size = 128;
78 int size_of_int = gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT;
81 if (gdbarch_ptr_bit (gdbarch) == 64)
82 si_pad_size = (si_max_size / size_of_int) - 4;
84 si_pad_size = (si_max_size / size_of_int) - 3;
85 append_composite_type_field (sifields_type, "_pad",
86 init_vector_type (int_type, si_pad_size));
90 type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
91 append_composite_type_field (type, "si_pid", pid_type);
92 append_composite_type_field (type, "si_uid", uid_type);
93 append_composite_type_field (sifields_type, "_kill", type);
96 type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
97 append_composite_type_field (type, "si_tid", int_type);
98 append_composite_type_field (type, "si_overrun", int_type);
99 append_composite_type_field (type, "si_sigval", sigval_type);
100 append_composite_type_field (sifields_type, "_timer", type);
103 type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
104 append_composite_type_field (type, "si_pid", pid_type);
105 append_composite_type_field (type, "si_uid", uid_type);
106 append_composite_type_field (type, "si_sigval", sigval_type);
107 append_composite_type_field (sifields_type, "_rt", type);
110 type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
111 append_composite_type_field (type, "si_pid", pid_type);
112 append_composite_type_field (type, "si_uid", uid_type);
113 append_composite_type_field (type, "si_status", int_type);
114 append_composite_type_field (type, "si_utime", clock_type);
115 append_composite_type_field (type, "si_stime", clock_type);
116 append_composite_type_field (sifields_type, "_sigchld", type);
119 type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
120 append_composite_type_field (type, "si_addr", void_ptr_type);
121 append_composite_type_field (sifields_type, "_sigfault", type);
124 type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
125 append_composite_type_field (type, "si_band", long_type);
126 append_composite_type_field (type, "si_fd", int_type);
127 append_composite_type_field (sifields_type, "_sigpoll", type);
130 siginfo_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
131 TYPE_NAME (siginfo_type) = xstrdup ("siginfo");
132 append_composite_type_field (siginfo_type, "si_signo", int_type);
133 append_composite_type_field (siginfo_type, "si_errno", int_type);
134 append_composite_type_field (siginfo_type, "si_code", int_type);
135 append_composite_type_field_aligned (siginfo_type,
136 "_sifields", sifields_type,
137 TYPE_LENGTH (long_type));
143 linux_has_shared_address_space (void)
145 /* Determine whether we are running on uClinux or normal Linux
148 int target_is_uclinux;
151 = (target_auxv_search (¤t_target, AT_NULL, &dummy) > 0
152 && target_auxv_search (¤t_target, AT_PAGESZ, &dummy) == 0);
154 return target_is_uclinux;
157 /* This is how we want PTIDs from core files to be printed. */
160 linux_core_pid_to_str (struct gdbarch *gdbarch, ptid_t ptid)
164 if (ptid_get_lwp (ptid) != 0)
166 snprintf (buf, sizeof (buf), "LWP %ld", ptid_get_lwp (ptid));
170 return normal_pid_to_str (ptid);
173 /* To be called from the various GDB_OSABI_LINUX handlers for the
174 various GNU/Linux architectures and machine types. */
177 linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
179 set_gdbarch_core_pid_to_str (gdbarch, linux_core_pid_to_str);